Trap.



A. M. HOUSER.

TRAP.

APPLICATION FILED JUNE 9, 1910.

5 SHEETS-SHEET 1.

WITNESS INVENTOR A. M; EGUSER. TRA'P.

APILIOATION FILED JUNE 9, 1910.

Patented 0013.20, 1914 5 SHEETSSHEET 2.

WITNESSES m ENTOR A: M. HOUSER.

TRAP.

APPLICATION FILED mm; s, 1910.

191 MMl a Patented 00a 20, 1914.

5 SHEETS'WSHEET 3.

' A. M", HOUSER.

TRAP.

APPLIOATION FILED JUNE 9, 1910.

Patentead 0613. 2Q, 191%.

5 BKEETS-SHEET 5.

"kmg W INVENTOR v-ision of a tilting trap having an improve type' of valve easily and positively operated,

en'rmm M. Houses, on cnxcaeo; ILL'INois, AssieNoB 'ro CRANE. conran'r, F 1 CHICAGO, ILLINOIS,'A eonrom'riou' or ILLINOIS.

- TBLAR Q specificatio nof Letters Patent. I Patented 19 '14. Application filed miss,- 1e10, Serial a sesses, .1

To all whom it may concern: Be itkno'wn that I, ARTH R M. HoUsnR, a. citizen of the United States, residing at Chicago, in the county of Cook and State of. Illinois, have invented certain new anduseful Improvements in Traps, of which the: iollowing is a specification.

' The inventionrelates in general to traps and the valve mechanism and operating means therefor. It has for its principal objects; the pro-.

wherein the pressureassists in open ng the valve;- the provision of a trap havlng an improved ad ustable means for securing the independent and positive-actuation; of thevarious valves; and the provisioni'o a trap particularly adapted for'accurate' measure" mcnt when used with a recorder as -'a metermg dev ce. Certain embodiments of the 1nvention are illustrated in the accompanying draw ngs, in which Figure; lis a plan view ofa'return trap;

Figure 2 is'a side elevation of the-trap of Figurelf Fi ure 3 is an enlarged side elevation showing the adjustable connection between an operating leverand the body of the trap;

I. Figure 4-. is an enlarged section through.

one of the valves employedp'in the trap;

Figure 5 is an enlarged sectionthrough a modified form-of valve;

Figure 6 is aperspective view of another.

s5 .form of return trap;

Figure '7 is a side elevation of a non'return" trap with the'invention applied thereto; Figure 8 is a section through the admis- 4'0 axis of the trap of Figure 7 Figure 11 is adetail. view of adash-potmechanism for cushioning the trap and of.

' ,necting the pipes leading thereto with the.

a recording device operated thereby,'and

I "Figure'12 's a view showing the applica-* tion' of the invention to a vacuum system.

My invention is designed-for use in con- "nection with systems where there is a condensation of oil, water or other fluid, such for example as heating systems; boilers,

sion and outlet passages constituting theare operated under steam, a r,.or vacuum pressures, or a combination thereof." The chief object of my invention is to providea" 3 trap which .is accurate, effective andquickin operation, to which end I have providedeo the valve mechanism and operating means I therefor shown in the drawings and hereinafter described. 4

' Referring to the trap as shown in Figures 1 and 2, the principal. parts inay be enumer: '65 I ated as follows: 1 isthe frame-workof the.

d f trap, which frame-work isprovided with a 'loop portion 2 embracing the body of the tank; 3 1s the-tahlcmounted for oscillation within-the loop'2,having,the pipes 4 and 5 as its axis of'move'ment,4 being the live steam or air inlet, 'and' 5 'beingthe' liquid inlet-and'also the liquid outletof the trap;

6 is a; lever pivoted tothe top ofthe .loop 2 intermediate its ends and secured to one end '75 of the tank by means of the connecting rod 7 and carrying at'its other .end the weight" 8; 9 is the casing of'the' valve for controlling the admission of live stearn' or air-to the tank; 10 is the casing of thevalve'for 'controlling the flow of the liquid condensation to the tank 12 is the casing of the valve for control-lingthe flow of the liquid ,from the 235 tank backthrough the discharge outlet;

13, 14, 15, and 16 are levers for operating the various valves, such levers being-con A nected to the rods 17 and 18 projecting from connecting rods'19, 20, 21, and 22 23 is the live steam or airinlet; '24 is the outlet pipe leading to the' boiler or elsewhere; 25 is the liquid inlet leading to the tank; 24: is the justable stops, operated by'the movement of the lever 6 and seem" ;.-at one endv t o dashpot mechanism' 27 for cushioning the trap as it tilts, said rod .operatin. a recording w device hereinafter to be'descri ed; '100 The casings for the valves are cast in one piece and are" provided with passages con pipes and 5:;cons'tituting the 'trunn1on of thetrap.

For convenience, the operation of the trap will be described as the trapis applied to steam pressure. The tank as shown inFigure 2 occupies the position shown when the sides of the tank, by means of pivoted 9e air venting pipe; and 26'is a rod'with ad- I empty or. while filling, and when in this same time causing the actnation'of the rod position the live steam valve in the casing 9 is closed, the venting valve in the casing 10 'isopen to permit the exhaust of air from the tank as it is filled with the water of con- 5 densation, the valve in .thecasing 11 is open to permit the liquid to fiow into the tank, and the valve in the casing 12 is closed, thereby shutting off communication between the trapand the boiler. lVhen the tank becomes filled, the weight 8 is overbalanced -and the body3 moves downwardly, which movement secures the closing of the inlet valve inthe casing 11, and the air venting valve in the casing 10, and secures the opening of the livesteaia valve in the casing. 9

and the outlet valve in the casing 19 and theincomingdive steam allowsthe water to flow from the tank through the pipe 5. to the out -let valve and through the pipe'24. to the boiler, the movement of the ,lever. 6 at the 26 and dash-pot .27 together with the re corder 27 through the connection 27 Each of the levers 13, 14, 15, an'd 16 is connected to the upper end of a valve stem, and these levers are fulcrunied respectively at the points 28, 29, 30, and 31. The connection between tlie'ends of the operating levers. and the various connecting rods is indicated in Figure 3. As here shown the the valve 18 thus secured, and the (lQSllUl degree of travel given the valve independent of the extent of movement of the body of the trap. Furthermore, the valve is actuated only as the tank approaches theend of its movement.

The valve as shown in Figure 4 is preferably the construction used in the casings 9 and 12, although the valves in the casings 10 .and 11 may be similarly constructed. The valve in Figure 4 is numbered as applied to the casing 9, 33 being connected to the pipe 23, and the opening 34 being connected to the pipe 4 leading to the trap. 'The bodv of the valve isprovided with a bushing having a series of ports 37, and if desired, an additionalport 36, to maintain equality of pressures between the chamber around the piston stem and the inlet 33, and in the bushing is mounted a valve device l'iaving va. disk 38 and the piston portion 39. This valve is provided with a central passage 40 controlled by a pilot valve 41, which pilot 65.valve is carr ed by a stem42 engaging the rod 19 is pivoted at its lower end to the rod lever 14 at its upper end. A plug 43 is screwed into the piston above the pilot valve, and is provided with passages 44; The pilot valve and the pressure above the piston 39 (which is loose enough to allow certain leak- 7 age past it) normally holds the disk 38 in the position shown,.while the tank is filling. Upon the tilting 0'1; the tank the pilot'valve is lifted, and the-accumulated pressure above the piston 39 being allowed to escape, the .7 valve disk 38 is quickly and readily opened, which'admits live steam to. the tank, through the opening 34 and pipe 4, and allows the water in the tank to How through the pipes 5 and 24, the valveof the casing. 12 having 3 been simultaneously opened. The arrange-. inent provides not only .for the quickopem ing of the pilot valve, but the trap is more sensitive and accurate, as much less force is required to move the pilot valve than would 8 be necessary to move the mainvalve itself.

In Figure 5 a modified form of valve is illustrated, such valve being provided with a pilot valve 41 carried-by a stem 42'. Instead of the disk employed in the other form 9'1 of valve, the piston I 39" -is formed at its lower end so as to co act' with the valve seat, and ispreferably hollowed out iii the manner illustrated.

In Figure 6 another form of return trap is illustrated, the structure differing from that of Figures 1 and Q-princip'ally in that the check valves 11- and 12".ar provided instead of the valves 11 and 12 as shown in Figure 1. In this construction the valve in 1n the casing 45 corresponds to the valve il-lus-- tratcd in Figure 4-, such valve and the air vent valve 10 being operated by levers 14" and 13 substantially in the same manner as in the construction of Figure 1. The casing 10 of the tank 3'" is broken away in this figure so as toshow the location of the live steam inlet pipe 46, the devices of Figures 1 and 2 having a corresponding pipe, which is a well known arrangei'nent in the art.

ln Figure 7 a'modified form of trap is illustrated, such trap being somewhat differently arranged as to the inountingof the tank, and being of the type commonly called a non-retlu'n-trap. In this case the tank is 11. pivotally mounted-on an axis 47, and is-held in the position shown, when empty or while filling, by means of the weight48 and lever 49. The'end of the level; 49 engages the rod 26 which actuatcs a dash p'ot device 27. 12 valve '52 correspondingin construction to the valve shown in Figure 4 controls the outletv from the trap, such valve 52 hcing'conncctcd to the outer end of the pipe-56 'forming a portion of the axis of the-trap (Figure 8). The inner end of the pipe 56 is (minccted to the T 54 to which tho'pipe is connected at 55'. The other side of the T (Figure 8) is providcd'with an inlet pipe (not shown) leading intothe part 54,- and such part means of the cut away port1on57. The

' stem ofthe valve is operated by the lever 58 .fulcrumed at 59 and having an adjustable connection with the rod 60 pivoted tothe' tank. I

. Referring now more particularly to Fig-- um 11, it will beseen that the rod 26 which actuates the dash-pot 27 to cushion the trap as it tilts, carries a collar 61 which engages stops 62 and 63 adjust-ably mountedon the 'rod27" which is supported from the dashpot 27-. This rod 27 is moved by the stops as the rod 26 moves when the trap tilts, and

actuates' the recorder 27 through the medium of the lever-[6e pivoted at the lower 'end of the rod.

- In Figure 12 I have shown my inventionv applied to a vacuum system, 65 being a por tion of-the vacuum line leading to a vacuum pump (not shown), and 66 beinga separator to receive the condensation. A drain pipe 67-leads'fr0m the separator to the trap, and is provided with a check valve 68 opening to the trap. The discharge pipe 69 is pro- 'vided with a'w-eighted check valve 70. A live steam .orair pressure supply pipe 74,

inlet valve 71 and a venting valve 72 are provided of the construction and operation.

heretofore dcscribed,-a'vent pipe 73 leading from the venting valve 72 to the vacuum line in the manner illustrated. T he operation is as follows: The condensation of thesyste'm drops by gravity into the drain pipe 67 and passesthrough the check valve 68 and thence through the portion 67 of the drain pipe into the trap, the weighted check valve 70 remaining closed. Whenthe trap tilts the steam or air pressure valve 71 is opened, admitting (pressure. to the trap, which pressure drives the condensation through the pipe 67 and through the check valve 70, to the discharge pipe 69, the valve 68 being closed by the pressure. When the trap returns to normal position the inlet valve 71 is closed and the vent valve 72 opened, the pressure remaining infthej tank and pipe 67 being drawn through the vent 'pipe 73 back into the vacuum line by the vacuum pressure, As the weighted check valve closes when the pressure is'; cut off, the venting of the trap pressure into the vacuum line equalizes the pressures in the drain pipe 67, the pipe 67 i and the trap, and the device is again ready Y the valve. .It will be noted also that the pas-v Referring to Figure 4 of the drawings it will be noted that I haveprovided the pilot valve 41 with an enlarged shoulder portion whichtakes against the plug {l3 and raises the piston and controlling. valve 38, thus providing a means for positively actuating said piston and valve should the reduction of pressure fail to secure initial movement of sage 40 extending through the piston 39 and valve 38 is unobstructed, save ofcourse when closed by the pilot valve 41'; Thisarrange-' ment and the provision-ofthe piston.-39; so that pressure will leak or bleed to, the upper portion of the closed chamber obviates the necessity of: a complicated packed valve device provided with communicating ports, and affords a convenient and simple mocha-i msm.

Having thus described my invention and illustrated its use, what I claim asinew and desire to secure by Letters Patent is the 'fol-;

lowing I a L A steam trapcpmprising in 'combination, a tilting tank having aconduit, a valve 0 casing in the conduit, '9. pressure con-"' trolled piston valve loosely mounted in said. casing and having-a restricted passage.-there'- through leading to the discharge side for the-- casing, a pressure chamber above said valve an adapted to receive a predetermined amount:

'of pressurefrom'the tank to normally hold;

the valve closed on its seat, a pilot valve for said restricted passage and constructed to 1 have a lesser'cross-sectional area than-that so of the main valve, and a connection between the pilot valve and the. tank' whereby the former is actuated on the tilting of the tank, substantially as and for the purpose forth. 'j 2. In a steam trap, a tiltingtankha'ving an exhaust conduit, a valve casmg intlie eonduit, a mainp'iston valve looselyil'mountedff'i.

in saidc'asing subject to pressure 'fro'm'the? tank and having-a restricted passageleadi-ng- '10 to the discharge side of the casing, aopressure chamber 'above said valve for receiving a predetermined amount of pressure from the tank past the piston tonormally-hold r the valve closed on itsseat', ajpilotyalve i 10 said pressure chamber controlling' the sai j restricted passage and having a lesser cross'-' sectional area than that of the main valve, and mea-ns actuated by the tilting of thetank for operating the pilot valve thereby 'eX- hausting the pressure in the pressure.'chamher through the said restricted 'pa'ssage v whereby'the main-valveis caused to rise by the action'of the pressure from the tank to empty the tank.- v w '1' 1 '3. n a steam trap, a tilting tankhavin'g' an admission conduit; a'valveicasing in theconduit having a pressure inlet opening; a. main piston valve loosely mounted in saidcasing subject to pressure from the inlet side. of the casing and having a restricted passage therethrough leading to'the discharge side-oi, the casing; a pressure chamber above 'said valve ada tedto receive a predetermined amount 0 pressure from the inlet side of. the casing and past. the piston to normally hold the valve closeddown on its seat;'; 'a pilot valve extending through the casing for controllingthe said restricted passage'andhaving a lesser cross-sectional area-,thanthat' of the main valve; and means actuated by the tilting of the tank for operating the pilot 3 valve, whereby to exhaust the pressure in the s pressure chamber and thereby permit the 5 main valve to have positive lifting movement to admit pressure to the tank through the said admission conduit.

In testimony whereof I have hereunto igned my name in the presence-of the two ubscribed Witnesses.

- ARTHUR M. HOU SEE. \Vitnesses:

-F. T.- DoNonUE. M. W. LINK. 

